1 Visualisation miniworkshop 2019 Hebden Bridge UK 6

1 Visualisation mini-workshop 2019 Hebden Bridge UK 6 -9 June 2019 John Allison Geant 4 Collaboration Meeting Jefferson Lab 23 Sep 2019

2 Attendees John Allison (convenor) Guy Barrand Gabriele Cosmo Laurent Garnier and family Fred Jones and Lydia Ben Morgan Evgueni Tcherniaev Joseph Perl John Allison Geant 4 Collaboration Meeting Jefferson Lab 23 Sep 2019

3 Topics Revive Open Inventor Build issues resolved/ongoing In-GUI histogram plots Real-time accumulation not feasible But plots could be shown at end of run (ongoing) Magnetic/electric field plotting Big progress made (see Developments in 10. 5 and for 10. 6) Geometry debugging Visualisation of overlaps (see Developments in 10. 5 and for 10. 6) A dedicated app with a tailor-made GUI is needed John Allison Geant 4 Collaboration Meeting Jefferson Lab 23 Sep 2019

4 Topics (contd) Apple—the future Open. GL is deprecated A disaster for us-–except we expect some 3 rd party will continue to support it Need to exploit Apple’s native graphics system, so… Future-proofing Geant 4 visualisation We think we should write a new driver for Qt’s Q 3 D (big job—ongoing) Should be platform independent Should exploit native graphics system of platform John Allison Geant 4 Collaboration Meeting Jefferson Lab 23 Sep 2019

5 Other topics Boolean processor A long-running issue Use cloud as fallback (done) Introduce a new graphics primitive based on G 4 Tessellated. Solid (ongoing) Then write new code for boolean operations on G 4 Tessellated. Solids (ongoing) Build issues for TOPAS with Qt resolved Ray. Tracer. X Ray. Tracer is mutithreaded but Ray. Tracer. X not yet John Allison Geant 4 Collaboration Meeting Jefferson Lab 23 Sep 2019

6 Summary Very profitable John Allison Geant 4 Collaboration Meeting Jefferson Lab 23 Sep 2019